Biking is a good exercise. A few days ago I joined the massive bike ride of the 13th tour of the fireflies. I lost 2 lbs. after biking for almost 5 hours. Medyo masakit sa puwet pero I am happy because we also did it for clean air.
2. Running
Yes it's true that running can help you loose weight. I lost 1 lb. during the Nat Geo Earth Day Run 2011 last April 10, 2011 at the Bonifacio Global City in Taguig

3. Playing Ultimate Frisbee
When I have free time I go to UP Sunken Garden to play Ultimate Frisbee, it's an effective way to loose weight because it involves a lot of running, so you really sweat a lot when you play this.
4. Swimming
And of course, swimming. Nothing beats a natural way of loosing weight with swimming. My friend Jayson Biadog swims and this is his way of loosing weight.
How about you what do you do to loose weight?